Wind energy, solar energy, bioenergy, nuclear energy ... Nowadays, a variety of new energy sources are emerging, and many energy companies have also invested in the development and utilization of new energy sources. But the actual situation is that in the current state, it is impossible for us to abandon traditional energy sources and replace them with new energy sources. The new energy sources with mature technology also have various instabilities and are not suitable for completely replacing traditional energy sources.
How to make comprehensive use of these new energy sources, give play to their respective advantages, and improve energy efficiency is one of the current important issues. Experts believe that energy development is no longer purely innovative for a single technology, but rather clean energy use, carbon recovery and application, the development and application of renewable energy, and the complementarity and conversion of various energy sources. Processes are integrated on a unified platform. As a result, the concept of "Fan Energy Network" gradually surfaced.
New energy blossoms
Shanghai World Expo can be described as the world's largest test site for the use of new energy. Here, a variety of new energy blooms, which makes people dazzled.
The Expo Park first fully introduced the concept of solar energy. The roof of the World Expo theme pavilion is laid with solar panels on a large area, and the grid-connected power generation operation mode is used to transfer solar power back to the urban power grid. The solar panel covers an area of ​​30,000 square meters, with an annual generating capacity of 2.5 million kWh and a generating power of 2.57 MW. This will be the most in all previous World Expos. In the Expo Park, visitors will likely see various types of solar landscape lights and solar sculptures, as well as solar corridors on both sides of the Huangpu River that can both avoid rain and generate electricity.
As one of the first pilot cities in the national "Energy Saving and New Energy Vehicle Demonstration and Pilot Work", Shanghai combined with the Expo Science and Technology Action Plan, will demonstrate a total of 1017 vehicles including pure electric, hybrid, fuel cell, etc. All kinds of new energy vehicles. Among them, 321 pure electric vehicles, 500 hybrid vehicles, and 196 fuel cell vehicles. This is another concentrated demonstration of China's new energy vehicle technology achievements after the 2008 Beijing Olympic Games. In order to support the demonstration operation of the Expo New Energy Vehicles, a charging station has also been built in the Expo Park to supply energy for pure electric buses that use fast battery replacement methods. At the same time, a charging line has been built on Expo Avenue at each site Provide fast charging for super capacitor bus.
In addition to new energy sources, low-carbon technologies and low-carbon ideas are also ubiquitous in the Expo. The breathing floors, leftovers that can generate electricity, and the walls that keep the temperature and glow in the Zero Carbon Pavilion in London are all bright. "Hamburg House" effectively uses the waste heat of passive heat sources such as the human body and indoor appliances to meet most of the indoor energy needs.
For example, the five-story building of the "Eco-home in Shanghai" is made of waste bricks during the renovation of the old city of Shanghai. The roof blinds can automatically change the angle following the change of the sun angle. The potential energy up and down the elevator can also be stored for the elevator Use it yourself. In addition, the Spanish Pavilion uses rattan as building materials, the China-Africa Joint Pavilion is made of recyclable iron sheet, and the entire World Expo Park generally uses rainwater collection systems, making Shanghai World Expo a veritable "green World Expo."
The reporter learned that many of these energy-saving and low-carbon technologies are more advanced technologies in the world. Although they are still in the demonstration operation stage, the attempts of the World Expo will make them more mature and meet the actual application requirements. Realize industrialization, and then promote large-scale application. Taking the new energy vehicle as an example, after the World Expo, the hybrid vehicle products developed by SAIC will be put on the market in batches, and the 20% fuel-efficient SAIC Roewe 750 mid-range car and other models will be mass-produced.
At present, the performance of fuel cell vehicles developed in Shanghai has steadily improved, and the overall cost has dropped by more than 20% compared with last year. With regard to the promotion policy of new energy vehicles, Shanghai is expected to try out commercial models such as installment payment for complete vehicles, battery financing leasing, mileage consumption settlement, and will also promote the construction of more than 7-10 charging (discharging) power stations and about 400 charging piles and other supporting facilities. infrastructure. In addition, the “Smart Grid Comprehensive Demonstration Project†in the Pudong Park will continue to play a role after the Expo, not only for permanent buildings including the China Pavilion and Theme Pavilion, but also for new buildings in the Pudong area of ​​the Expo. The "smart utility" of the smart grid.
Panergy can improve comprehensive energy efficiency
New energy shines at the World Expo, but there is still a lot of way to go before these technologies can truly enter the homes of ordinary people. Various new energy sources have their own advantages and disadvantages. How to make full use of various new energy sources to maximize their energy efficiency is currently the focus of attention.
For example, the power of wind energy comes from natural wind, and the process of generating electrical energy does not generate new pollution, which is an excellent clean energy. But generally speaking, when a large amount of electricity is needed during the day, the wind is not very strong, but when the electricity consumption is small at night, the wind is very strong. Similarly, solar power generation is not very stable. Cloudy, rainy or evening, solar power generation energy is greatly inferior. More importantly, it is not practical to completely replace traditional energy with new energy. On the one hand, the existing buildings currently account for the vast majority, and it is necessary to carry out energy-saving transformation on the basis of the existing buildings, not only the cost is very high, but also the procedures are relatively complicated; Sex, and cannot completely replace traditional energy. Experts said that if only a certain single energy source is used, it needs to be equipped according to the highest value used, and in most cases, people will not reach this peak value, which not only causes waste of energy, but also causes corresponding Waste of energy hardware.
Therefore, when a company launched the new concept of "Fan Energy Network", it attracted great attention from the industry.
Simply put, the pan-energy network is the smart energy network. Through intelligent means, based on customers' energy characteristics, relying on clean energy technology and using Internet technology to provide new energy customers with intelligent platforms and energy solutions, so as to achieve a new industry combining system energy efficiency technology and IT intelligent technology. For example, the solar holographic integrated technology on the roof can make full use of the solar full-band spectrum, running through the four life cycles of solar energy from production, storage, transportation, application and recycling, to achieve the best synthesis of the four energy efficiency of solar energy: light, heat, electricity and photochemistry application. At the same time, the combined heat and power supply of households based on fuel cells can demonstrate the unique advantages of fuel cells and meet the needs of household electricity and domestic hot water in the absence of urban power grids and without the sun and wind. Through intelligent information systems, these energy sources are integrated on the same platform, and the conversion between different energy sources is carried out at the appropriate time.
Using the "Fan Energy Network", different types of energy can be centrally managed in future buildings, and the control system can reasonably allocate and transform different forms of energy according to the actual needs of different residents. Energy flow is like having wisdom, knowing how to work most efficiently, when and what kind of energy should be used to provide energy, so as to reduce energy consumption, minimize emissions, and achieve energy saving and emission reduction for families. People can clearly see from the simulation demonstration of the China National Pavilion Pan Energy Network that under the effective management of the "Pan Energy Network", in addition to renewable energy such as wind energy and solar energy can be effectively used, traditional coal-based energy can also be used Through underground gasification, catalytic gasification, gas-electricity cogeneration, and Weihai algae biological carbon absorption technology to achieve efficient development and clean utilization.
Industry barriers need to be eliminated
Energy can flow and distribute in different energy bodies like water flow. This is the beautiful prospect described by the "Pan Energy Network". However, in order to achieve the conversion between different energy sources, various barriers need to be eliminated, and only through the cooperation of all parties can the energy efficiency be truly maximized.
Experts said that the current system energy efficiency technology is still under development, and the widespread promotion of the "Fan Energy Network" still faces many difficulties and barriers. Among them, the biggest obstacle is the barriers between industries. For example, the power generation efficiency of power plants is now 37% -40%, and 55% becomes heat energy. Power plants generally only recover a small part of them, and other heat energy is wasted. If the barriers can be broken, the heat utilization efficiency can be greatly improved. Some experts urged that, in addition to actively breaking down barriers between enterprises, the state should also give policy support. "If the barriers of the energy industry can be broken, the energy saved is equivalent to a Gezhouba hydropower station."
At the same time, the increase in the initial cost of the energy efficiency system is also not a small problem. Some studies have pointed out that the establishment of an energy efficiency system will probably increase the cost of enterprises by 5% -8%, but this can be fully compensated by the improvement of energy efficiency. As long as the national policy helps to break down the barriers, the entire system may be recovered from one year to one and a half years cost of investment. At the same time, the government's encouragement policy is also essential. For example, in the field of new energy vehicles, the United States has issued a number of energy laws and national plans in the field of automobile transportation. In terms of strategic choices for the development of automotive energy, the United States has diversified from a single development pattern that focused on fuel cell technology research and development to a variety of technical routes including hydrogen fuel cells, hybrid power, advanced diesel, bioethanol, and biodiesel. Changes in the pattern of change have made the development of new energy vehicles in the United States at the forefront of the world.
The Co-Al Co-doped Barium Titanate
Lead-free Piezoelectric Ceramics was successfully developed by Yuhai company
through repeated experiments. By Researching the influence of Co-Al Co-doping
on the structure and properties of Barium Titanate-based piezoelectric
ceramics, the formulation and preparation technology of Barium Titanate-based
piezoelectric ceramics were optimized. Yuhai`s BaTiO3 was prepared by conventional
solid-phase sintering method, with the piezoelectric constant d33 (>170pC/N),
dielectric loss tgδ≤0.5% and mechanical coupling coefficient Kp≥0.34.
Barium titanate lead-free piezoelectric
ceramics are important basic materials for the development of modern science
and technology, which was widely used in the manufacture of ultrasonic
transducers, underwater acoustic transducers, electroacoustic transducers,
ceramic filters, ceramic transformers, ceramic frequency discriminators, high
voltage generators, infrared detectors, surface acoustic wave devices,
electro-optic devices, ignition and detonation devices, and piezoelectric
gyroscope and so on.
Application: military, ocean, fishery, scientific research,
mine detection, daily life and other fields.
China Patent of Yuhai company`s BaTiO3
Chinese Patent No.: ZL 2011 1
0126758.6
Name: Lead-free Barium Titanate
Piezoelectric Material with Addition of Cobalt and Aluminum
Lead free piezo material BaTiO3
Lead-free Material
Properties
BaTiO3
Dielectric Constant
ɛTr3
1260
Coupling factor
KP
0.34
K31
0.196
K33
0.43
Kt
0.32
Piezoelectric coefficient
d31
10-12m/v
-60
d33
10-12m/v
160
g31
10-3vm/n
-5.4
g33
10-3vm/n
14.3
Frequency coefficients
Np
3180
N1
2280
N3
Nt
2675
Elastic compliance coefficient
Se11
10-12m2/n
8.4
Machanical quality factor
Qm
1200
Dielectric loss factor
Tg δ
%
0.5
Density
Ï
g/cm3
5.6
Curie Temperature
Tc
°C
115
Young's modulus
YE11
<109N/m3
119
Poison Ratio
0.33
Lead Free Piezoelectric Elements
Piezo Element,Piezo Ceramic Elements,Piezoelectric Ceramic,Pzt Tubes
Zibo Yuhai Electronic Ceramic Co., Ltd. , https://www.yhpiezo.com